Riohabd baton



It. EATON, OF LEE, COUNTY OF'KENT, ENGLAND.

LocoMoTivEFlRE-GRATE.

Specification forming part of Letters Patent No. 59,329, dated October30, l8C6.

To all whom it may concern:

Be it known that LAR. EATON, of Lee, England, have invented a new andImproved Locomotive Fire-Grate; and I do hereby declare that thefollowing is a full, clear, and exact description thereof, which willenable others skilled in the art to make and use the same,

Y reference being had to the accompanying drawings, forming part of thisspecification, in which-.

4Figure l represents a longitudinal vertical section of this invention.Fig. 2 is a horizontal section of the same. Fig. 3 is an end view of thesame.

Similar letters of reference indicate like parts.

This invention relates to a grate which is composed of a series ofsquare terraces of gradually-decreasing size, which rise above eachother and are inclined toward the center in such a manner that a uniformsupply of air to the fuel is obtained and a more perfect combustion iseffected than with a grate of the ordinary construction, and,f'urthermore, the Waste of unconsumed fuel dropping through thegrate-bars is avoided.

A The invention consists, also, in the arrange- 'mentvof a perforatedguard, in combination with suitable dampers in the ash-pan, in such amanner that the supply of air to the fuel can be regulated at pleasure,and at the same time the escape of burning embers from the ash-pan isprevented.

My grate is composed of a series of gratebars, A, which are placedeither horizontally or at angles radiating from the perpendicular, andarranged terracewise or in steps, so as to effect an equal distributionof atmospheric air through the mass of the fuel, and principally throughthe hot embers or charcoal, and to cause'a current of hot ame or gasestoward the surrounding water-spaces.

The hearth-plate B is cast with recesses G to receive a filling offire-brick, fire-clay, or other suitable refractory material, so as toprotect the iron and form a durable hearth having a hot surface, tendingto promote combustion.

The ash-pan D has two sides and a bottom, and it is attached to ribscast upon the hearthplate B, and is provided with a back damper, E,front damper, F, and a front guard, Gr, made of wire-gauze or perforatedplate. This latter has to be kept tightly closed, except when thefireman has occasion to clean out the ash-pan.

The guard Gr is made of stout wire-gauze with about Iive-sixteenths-inchmesh, or of oneeighth-inch plate thickly perforated withvesixteenths-inch holes, and is attached by bolts to the damper-shaftupon its upper edge, and upon its lower edge and sides to a light ironstiffening-frame, and the guard may beretained shut or open by means ofthe ordinary lever and rod extending to the foot-board, or by means of aweighted lever.

The main front damper, F, is for the purpose of regulating the draft tothe fire, and and the back damper, E, is intended for winter use,bothbeing operated in. the ordinary manner by levers andv rodscommunicating with the foot-board.V g y 'The grate-bars may behorizontal or placed at any angle inclining upward or downward, orradiating from a perpendicular plane; but I prefer not to deviate morethan fifteen degrees either Way from a horizontal plane. Also, in orderto promote combustion, where a description of fuel is used, such aspeat, &c., which throws off larg'e volumes of gases, re= quiringadditional supplies of freshV atmospheric air for their completeignition and combustion, I use suitable air-pipes K, which draw theirsupply either direct from the ash-pan, or they may have separateopenings outside, controlled by suitable valves or dampers.

As respects the grate-bars, I prefer them being cast in separateparts-that is, each square by itself 5 but they may be cast in pairs orin one piece, and they, moreover, may be round, oval, or polygonal inshape, or plain, in lieu of being square or oblong. Also, as regards theash-pan, it may either be attached to the hearth-plate or directly tothe fire-box and the present or ordinary ash-pans may be easilyconverted to the purposes of this inveng tion by removing the presentfront damper to the position shown in the drawings, and subi stitntingthe wire-guard in its place.

What I claim as new, and desire to secure by Letters Patent,is-

l. A grate composed of a series of gratebars, A, either square, round,oblon g, or polyg onal, and placed one above the other in the form ofterraces of gradmuy-decreasing size, The above specification of myinvention substantially as and for Jshe purpose described. signed by methis 6th day of March, 1866.

2. The ash'puu D provided Withfront guard G, front damper, I, and buckdamper, E,i1 RICHARD EATON' combination with the grate, constructed andWitnesses:

operating substantially as und for the purpose J AMES SMITH, s! setforth. s W. HAUFF.

